added simple cache system.

client.go

@@ -19,6 +19,7 @@ type Client struct {
 	Token   string
 	Socket  gowebsocket.Socket
 	HTTP    *http.Client
+	Cache   *Cache
 
 	// Event Functions
 	OnReadyFunctions         []func()
@@ -30,6 +31,14 @@ type Client struct {
 	OnChannelDeleteFunctions []func(channel_id string)
 }
 
+// Client cache struct.
+type Cache struct {
+	Users    []*User    `json:"users"`
+	Servers  []*Server  `json:"servers"`
+	Channels []*Channel `json:"channels"`
+	Members  []*Member  `json:"members"`
+}
+
 // Self bot struct.
 type SelfBot struct {
 	Email        string `json:"-"`